I always wonder how a lens compared at fixed focal length & aperture and see if the optical quality justify IQ and price they offer.

I was never satisfied with the IQ of 12-50mm and I don't know why?

Many people here mentioned that they really liked the 12-50mm IQ for it's sharpness and value. For me it's an 'ok' lens to suit all-rounder purposes but it just not as sharp as my previous 14-42mm lens.

So I made a small comparison test with my Voigtlander 25mm f/0.95 lens

Click here to see the comparison table:

The standard aperture for 25mm (Olympus 12-50mm) was f/5.1.

So I bumped a bit to 5.6 to match Voigt 5.6 preset ring, beside many said the sweet spot for 12-50mm for center sharpness was 5.6.

Please let me how your thoughts and sorry for bad grammar, english wasn't my first language and this is my first post as well.